89-02 Dodge 5.9L 12V/24V Cummins Aftermarket Oil Cooler
$124.00
- Part Number: 3921558A
- Est. Ship Time: Usually Ships By Next Business Day

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This is a aftermarket stock replacement oil cooler. Fits 1994-2002 5.9L Cummins.
Part number: 3921558A
Picture for representation ONLY (but is pretty close)

Discontinued (Updated 6/17/2024)
3000 RPM Governor Spring Kit (3K GSK)
This kit allows your engine to have full fueling to approximately 3000RPM..
$0.00
Discontinued (Updated 3/17/2025)
4000 RPM Governor Spring Kit (4K GSK)
The Peak Diesel Governor Spring Kit is a special combination of springs a..
$0.00
4000 RPM Governor Spring Kit with 12 Heavy Duty Valve 60lb Springs
The Peak Diesel Governor Spring Kit is a special combination of Bosch springs a..
$0.00
High Tech Turbo Sled Puller 66 550-625 HP 1225 ft. lbs. torqueFits 1989-2007 Dodge Cummins Turbo Diesels.A boost fooler in included for 03-07 trucks.3..
$0.00
5000 RPM Governor Spring Kit (5K GSK)This 5,000 RPM kit utilizes the stock idle (large) spring and will idle at stock levels. We have installed this k..
$253.45
89-98 Dodge 5.9L 12 Valve Cummins Lift Pump Gasket
Cummins part number 3939258 lift pump to engine block gaskets. Includes #3 in the second picture o..
$6.73
Backordered with No ETA (Updated on 5/19/2025)
These extra heavy duty 14mm XHD studs are made from L19 and have a glass bead..
$803.42
Discontinued (Updated 4/19/2024)
5000 RPM Governor Spring Kit (5K GSK)
This 5,000 RPM kit does not utilize the stock idle (large) spring. We onl..
$0.00
These are the rubber inserts for the valve cover bolts on 98.5-2002 Dodge 24 Valve Cummins Diesel trucks.
These are number 5 in the picture
Cumm..
$45.09
Oil cooler for the 1989-2002 Dodge 5.9L 12 & 24 Valve Cummins Diesels.
7 Plate Style, replaces Cummins part number 3957544
Includes gaskets. B..
$137.13
1989-2018 Dodge 5.9L/6.7L Cummins Diesel Water PumpThis is one of many styles of the Cummins water pumps made for the various years of Cummins 5.9L &a..
$310.78
Industrial Injection 2nd Gen 12mm Gorilla Girdle
Industrial Injection part number: PDM-06021 (old number RMG2G12MM)..
$1,016.82
Includes Volume 1 & Volume 2 for a total of 2 books.
Cummins: 3666087..
$197.45
This is a Cummins factory part. Fits all 12/24 Valve and Common Rail Cummins engines.
Cummins part number: 3902332..
$11.62
Dodge 5.9L Cummins Diesel Bronze Cam Thrust Plate, also known as a cam retainer (not cam GEAR retainer though)For 89+ 3.9L/5.9L/6.7L Cummins Blocks.Ma..
$93.24
DISCONTINUED1989-1998 12 Valve Cummins 5.9L Heavy Duty stock to 750hp The pushrod is a very important and often overlooked component in any high hors..
$0.00
Discontinued (Updated 2/23/2024)
1989-2012 Dodge 5.9L Cummins Diesel Water Pump
All new housing & internals
Built to meet or exceed OE spec..
$0.00
5.9L 12 & 24 Valve Cummins 6BT Oil Pump
This pump will bolt right into your 12 or 24 valve Cummins engine and is a higher volume pump than the ..
$172.11
12 Valve Cummins 1994-1998 Overhaul Kit by Interstate-McBee.
Choice of piston bore sizes:
Stock Bowl -
Standard - PN: OH3802561-6B
...
$713.50
Set of 26 89-98 5.9L 12 Valve Cummins Diesel Head Bolts
Kit includes:6x Cummins Part number: 3920779 14x Cummins Part number: 39207806x Cummins Part ..
$341.93
Cummins 6B 5.9 ISB Cylinder Head Gasket
Made by Mahle for OEM quality.
Mahle part number: 54174
Cross reference part numbers:
M-3977063..
$82.69
Includes two gaskets. Fits the STORM block with the 2 turbo oil drains.
Cummins: 4932124 & 3942915
Numbers 12 & 13 in image only...
$76.77
Cummins Oil Pressure Regulator Valve. For all 5.9L & 6.7L Cummins engines 1989 and up.
This part replaces part numbers 3902238 & 3927622.
Cummins pa..
$24.24
Cummins Timing Pin Retaining Ring 3904849
Number 2 from second image only...
$3.98
Did you break off the stock "nipple" on your stock plastic timing pin?
Time to fish that chunk of plastic out of the back of the cam gear a..
$35.00
Diesel Auto Power presents CNC machined 3pc manifold. For 1989-1998 12v with oval exhaust ports and T3 foot. CNC ported/gasket matched to improve airf..
$399.00
Diesel Auto Power fuel injector lines for 98.5-02 5.9L Cummins with P-Pump Conversion
6x 0.078 Fuel line kit designed for the P7100 on a ISB 24 Val..
$449.00
Diesel Auto Power fuel injector lines for 98.5-02 5.9L Cummins with P-Pump Conversion
6x 0.084 Fuel line kit designed for the P7100 on a ISB 24 Val..
$449.00
Diesel Auto Power fuel injector lines for 98.5-02 5.9L Cummins with P-Pump Conversion
6x 0.093 Fuel line kit designed for the P7100 on a ISB 24 Val..
$499.00
Diesel Auto Power fuel injector lines for 98.5-02 5.9L Cummins with P-Pump Conversion
6x 0.120 (Competition Only, not for street use). Fuel line ki..
$499.00
VP44027TAP 1998.5-2002 235HP pump that will fit Dodge Cummins Turbo Diesel with Automatic or 5-speed 215HP & 235HP Dodge 5. Most common pump found..
$2,065.99
Diesel Auto Power presents CNC machined 3pc manifold. For 1989-1998 12v with oval exhaust ports and T4 foot. CNC ported/gasket matched to improve airf..
$399.00
Adjustable Timing Pump Gear for 1994-1998 Dodge 5.9L Cummins With P7100 Fuel Injection Pumps. Will also work on P pump conversions.
Up to 40 degr..
$349.00
P-pump gear for stock 94-98 or 24v Cummins conversion with a P7100 injection pump. Also will replace a stock gear cracked by a killler dowel pin. Fits..
$99.00
Diesel Auto Power presents CNC machined 3pc manifold. For 1998.5-2002 24v with round exhaust ports and T3 foot or 2nd gen manifold swap for +2003. CNC..
$399.00
Diesel Auto Power presents CNC machined 3pc manifold. For 1998.5-2002 24v with round exhaust ports and T4 foot or 2nd gen manifold swap for +2003. CNC..
$399.00
1994-2002:
2nd gen style downpipe with HE351 flange welded on instead of standard HX40 style downpipe. Fits HE351 and large 4.4" flange turbos on 2..
$215.00
Aftermarket tin front cover cover. This cover installs on the front of the engine on the timing gear case. This does not include a gasket.
In..
$49.00
This item fits 94-98 12v Cummins. This item screws into a S300 or S400 turbo with 1/4 NPT oil inlet and allows you to hook a 12 valve turbo oil feed l..
$17.00
Marmon Flange 4.21 and Clamp Adapter to HX40 for box BW turbo to 4.0" HX40 flange.Adapt exhaust outlet flange from 4.21 Marmon for BW box s300 to HX40..
$99.00
Cummins part numbers:
Thermostat: 3928499
Seal: 3925466
Seal: 3927305 ..
$91.26
Fits: 1989-2001 Dodge 5.9L Cummins
Replace the damaged water pump on your vehicle with the Dayco Heavy Duty Water Pump. Dayco produces quality dire..
$44.56
Oil cooler for the 1989-2002 Dodge 5.9L 12 & 24 Valve Cummins Diesels.
7 Plate Style, replaces Cummins part number 3957544
Includes gaskets. B..
$137.13
The Dorman 620-066 Steel Clutch Fan Blade is a direct fit replacement for your worn-out stock fan blades. The stock fan blade is prone to failure due ..
$122.69
In need of a new water pump for your 89-12 5.9L or 6.7L Cummins? If so XDP has you covered. They offer many high quality replacement parts at a great ..
$64.95
1989-2018 Dodge 5.9L/6.7L Cummins Diesel Water PumpThis is one of many styles of the Cummins water pumps made for the various years of Cummins 5.9L &a..
$310.78
This is the BulletProof Water Pump for the 1989-2022 Cummins 5.9L and 6.7L. The Bullet Proof Diesel Aluminum Water Pump is designed for maximum d..
$399.95
Direct it Cummins replacement OEM Inner Heater Tube (Near Valve Cover)Cummins: 3912087..
$321.60
This engine cooling fan pulley bracket is designed to match the fit and function of the original part on specified vehicles. Made of quality materials..
$219.61
The XDP Xtra Cool Direct-Fit Replacement Radiator XD461 is designed as a direct-fit replacement for the leaking radiator in your 1994-2002 Dodge Ram 5..
$259.95
Fits: 1994-1998 Dodge 5.9L Cummins
FSD's Metal coolant pipe is a great way to dress up your engine bay and replace your dry rotted factory co..
$241.99
Features:
Direct Fit
Ideal for Cooler Climates
Lifetime Warranty
190º Degree thermostat
A defective thermost..
$74.95
Direct fit for 1994-1998 Dodge Ram with 5.9L 12 Valve Cummins
Activates at lower temperature (174º) so coolant flows through system earlier
Allows f..
$74.95
Fits: 1998.5-2013 Dodge 5.9L/6.7L Cummins
The Mishimoto High Temperature Thermostat for your 1998.5-2013 Dodge 5.9L/6.7L Cummins is an excellent op..
$74.95
Cummins pipe plug for multiple Cummins engines (1/2" NPT"
Cummins: 3008468..
$9.31